Hi Deepika
In my project there is SAP too, so I have a chance to do shadowing and learn any SAP module so please help me choose module in SAP.
It already sounds like you are more interesting in the materials side (hence I can see why MM is being suggested)
The main advise I can give here is if you have the chance to shadow and learn at work see which one is used a fair bit and who would mentor you. Practical experience with dedication is key to a successful career in SAP. You seem quite fortunate that you are at a company that has SAP for your to learn
The other bit to consider is to talk to your manager to see what skill shortages they have. If you can transition to SAP whilst at current employer you will be able to avoid going back to "Level 0" trying to get a look in. You also can leverage any good will you have developed with your current employer as you continue to work for them.
Regards
Colleen